TEXAS INSTRUMENTS - TPS3307-18, TPS3307-25, TPS3307-33 Data Handbook
Summary
This manual details the TPS3307 series, a family of micropower triple supply voltage supervisors for DSP and processor-based systems. It covers features like fixed 200ms power-on reset, adjustable monitoring inputs, and manual reset functionality, designed for industrial, automotive, and portable electronics.
Page 1 Text Content
TPS3307-18, TPS3307-25, TPS3307-33
www.ti.com
SLVS199B–DECEMBER 1998–REVISED OCTOBER
TRIPLE PROCESSOR SUPERVISORS
FEATURES
D OR DGN PACKAGE Triple Supervisory Circuits for DSP and (TOP VIEW)
Processor-Based Systems
SENSE1 VDD
Power-On Reset Generator With Fixed Delay
SENSE2 MR
Time of 200ms, No External Capacitor Needed
SENSE3 RESET
Temperature-Compensated Voltage Reference
GND RESET
Maximum Supply Current of 40µA
Supply Voltage Range: 2V to 6V
Defined RESET Output From VDD≥ 1.1V
MSOP-8 and SO-8 Packages
Temperature Range 40°C to 85°C
Typical Applications
Figure lists some of the typical applications for the TPS3307 family, and schematic diagram for
processor-based system application. This application uses TI part numbers TPS3307-33 and MSP430C325.
Applications using DSPs, Microcontrollers or Microprocessors
VDD VDD
100n F Industrial Equipment
SENSE 1
MSP430C325
Programmable Controls
SENSE 2 RESET RESET
Automotive Systems
470kΩ TPS3307−33
Portable/Battery Powered Equipment
SENSE 3
Intelligent Instruments
620kΩ Wireless Communication Systems Notebook/Desktop Computers
Figure 1. Applications Using the TPS3307 Family
DESCRIPTION
The TPS3307 family is series of micropower supply voltage supervisors designed for circuit initialization
primarily in DSP and processor-based systems, which require more than one supply voltage.
The product spectrum of the TPS3307-xx is designed for monitoring three independent supply voltages:
3.3V/1.8V/adj, 3.3V/2.5V/adj or 3.3V/5V/adj. The adjustable SENSE input allows the monitoring of any supply
voltage >1.25V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the
following supply voltage monitoring table.
During power-on, RESET is asserted when the supply voltage VDD becomes higher than 1.1V. Thereafter, the
supply voltage supervisor monitors the SENSEn inputs and keeps RESET active as long as SENSEn remain
below the threshold voltage VIT+.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Power PAD is trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Copyright 1998–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Page Summary Contents For TEXAS INSTRUMENTS - TPS3307-18, TPS3307-25, TPS3307-33 Data Handbook
Manual Details
| Brand | Texas Instruments |
|---|---|
| Pages | 14 |
| File Size | 425.67 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What voltages can the TPS3307-18 monitor?
It monitors 3.3V, 1.8V, and an adjustable voltage via external resistor divider.
How long is the reset delay after all voltages become valid?
The internal timer provides a fixed delay of 200 ms (typical).
What is the operating temperature range?
The TPS3307 family operates from –40°C to 85°C.
What happens when the manual reset (MR) pin is low?
RESET becomes active (low) and RESET becomes high.